Lead, Whole Blood (Maternal)

CPT: 83655
Print Share

Test Details

Use

Monitor maternal blood for environmental lead exposure. The Centers for Disease Control and Prevention recommends the following testing schedule for frequency of maternal blood lead follow-up during pregnancy.1 See table.

Result of Screening Test

Perform Diagnostic Test on Venous Blood

<5 μg/dL

No follow-up is indicated.

5−14 μg/dL

Within one month. Obtain a maternal BLL or cord BLL at delivery.

15−24 μg/dL

Within one month and then every two to three months. Obtain a maternal BLL or cord BLL at delivery.

25−44 μg/dL

Within one to four weeks and then every month. Obtain a maternal BLL or cord BLL at delivery. Within 24 hours and then at frequent intervals depending on clinical interventions and trends in BLL. Consultation with a clinician experienced in the management of pregnant women with BLLs in this range is strongly advised. Obtain a maternal BLL or cord BLL at delivery.

Methodology

Atomic absorption spectrometry (AAS) or inductively coupled plasma/mass spectrometry (ICP/MS)

Specimen Requirements

Specimen

Whole blood

Volume

3 mL

Minimum Volume

0.5 mL

Container

Royal blue-top (EDTA) tube or tan-top lead-free tube; submit original unopened tube

Collection

Mix blood thoroughly to avoid clotting.

Storage Instructions

Maintain specimen at room temperature.

Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x2

Causes for Rejection

Clotted specimen

Clinical Information

Footnotes

1. Ettinger AS, Wengrovitz AG, eds. Guidelines for the Identification and Management of Lead Exposure in Pregnant and Lactating Women. Atlanta, Ga: Centers for Disease Control and Prevention, US Department of Health and Human Services; November 2010.

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
700433 Lead, Maternal Blood 700440 Lead, Blood (Maternal) ug/dL 5671-3

For Providers

Please login to order a test.

 

© 2017  Laboratory Corporation of America® Holdings and Lexi-Comp Inc. All Rights Reserved.

CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf